Conduit fitting



Nov. 13, 1928.

H. A. SELAH CONDUIT FITTING Filed Nov. 50 1925 A TTORNEYS'.

Patented Nov. 13, 1928.

TATES ATENT 'Frics.

HGWARID 'A. snL'AH, OF ERIE, PENNSY VA IA, ASSIGNOR no ERIE MALLEABLE mo GOMPANY, or ERIE, PENNSYLVANIA, 1A conroaA'rzoN or rnNNsYLvANrA.

CONDUI'J. FITTING.

Application filed November 30, 1925. Serial No. 2'2,l81.

This invention is designed to improve conduit fittings, particularly such fittings as are adapted for use with threadless' fittings.

Such fittings are sometimes used in situations 5 which require closures approximately, if not entirely,"water .tight and the present inven tion is designed to accomplish this purpose.

Features and details of the invention will appear from the specification and claims.

I The invention is illustrated in the accompanying drawings as follows Fig. 1 shows a side elevation, partly 1n section.

Fig. 2 a section ,onthe line 2-2 in Fig. 1

Fig. 3 an elevation of a gasket used in the construction.

1 marks the body of the fitting which as shown is in the form. of a conduit box. This has an extension 2 with a tapered opening 3.

vA contractible sleeve shaving walls conforming to the tapered opening 3 is arranged in the opening. This has a longitudinal slit 5 with a circumferential slit 6' extending.

' .compress it and pressure on the-gasket to therefrom.

The sleeve is adapted to receive and clamp a conduit 7. .r A nut 8 is screwed on the end ofthesleeve. This nut has a conical extension 9 which seats on a conical seat 10 on the outer end of the 30. extension 2 making a sealed closure. v

The nut has an internal flange 11 at its outer end and a gasket 12 is'arranged within the nut between the flange 11 and the end of the sleeve. Asthe' nut is turned up to draw the sleeve into the opening 3 so as to compress it into clamping engagement with th'econduit the end of the sleeve is drawn against the gasket 12 thus compressing it so that as it flows under compression it completely seals the 4 joint formed between the nut and the conduit.

Thus the completed article is completely sea1ed. A g

What I claim'as new is z:-

1. In aiconduit fitting, the combination of a body having a conduit opening therein; a contractible sleeve in the opening having a longitudinal slit, the walls of the opening and the sleeve having wedging surfaces; a nut on the sleeve, saidnut having an internal flange; and a gasketwithin the nut between the end of the sleeve and the flange, said nut forcing an axial movement of the sleeve to compress it and pressure on the gasket to form a seal on an inserted conduit, said fitting including means forming a seal between said nut and the walls of the conduit opening.

2. In a conduit fitting, the combination of 'abody having a conduit opening therein; a

contractible sleeve in the opening having a longitudinal slit, the walls of the opening and the sleeve having wedging surfaces; a nut on the sleeve, said =sleeve and nut forming a sealed closure through" a surface joint with the walls of the body and having an internal flange; and a gasket within the nut between the end of the sleeve and the flange, said nut forcing an axial movement of the sleeve to ket within the nut between the end of the sleeve and the flange, said nut forcing an axial so movement of the sleeve to compress it and pressure on the gasket to form aseal on an inserted conduit. 1 I

In testimony whereof I have hereunto set my hand.'

HOWARD A. SELAH. 

